An unnamed Turkish official confirmed for Reuters news agency the attackers' countries of origin after Turkish media reports. Some agencies named one of the men as Osman Vadinov, said to have crossed into Turkey from the IS stronghold of Raqqa in Syria in 2015. Reports that he was a Chechen have been denied by an unnamed police source in the North Caucasus, Russia's Interfax news agency reports. IS has long recruited members from mainly Muslim parts of the former USSR, with at least 2,200 believed to have come from Russia alone, according to a report last year. ... Yildirim said...
